Window-ventilator.



N. FRIEDMAN.

WINDOW VENTILATOR.

APPLICATION FILED PBEM, 1913.

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l Y i I @www NATHAN FRIEDMAN, OF CHICAGO, ILLINOIS.

WIND CVV-VENTILATOR.

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Specification of Letters Patent.

Patented Mar. 10, 1914.

Application filed February 27, 1913. Serial No. 751,060.

To all whom it may conce/ra Be it known that l, NATHAN FRIEDMAN, a citizen of the United States, residing at Chicago, in the county of Cool; and State of Illinois, have invented certain new and useful improvements in Window-Ventilators, of which the following is a specihcation.

This invention relates to that class of window ventilators which are adapted to be placed in the window frame between the sill and the bottom of the lower sash, and also between the head of the window frame and top of the upper sash when said sashcs are partly opened. The device is not a permanent fixture but may be removed from the window frame.

lt is the object of the invention to provide a ventilator' of the hind stated which is simple in construction so that it can be cheaply produced, and also to provide a structure which renders the ventilator extensible in order that it may be adjusted to fit windows of different widths.

The invention also has for its object to provide a novel arrangement of ba'l'lies or air defiectors as will be hereinafter described.

ln order that the invention may be better understood, reference is had to the accompanying drawing, in which- Figure l is an elevation showing the ventilator applied to a window. Fig.. 2. is an enlarged cross section on the line 22 of Fig. l. Fig. 3 is a fragment of the device showing how the saine may be lengthened to suit a wide window. Fig. Lt is an enlarged sectional view of the ventilator.

Referring specifically to the drawing the ventilator is an elongated casing, rectangular in cross section, and comprising a top 5, a bottom 6, and front and rear sides 7 and 8, respectively. @n the ends of the casing are telescopically mounted short sections 9 to adapt the ventilator to windows of different widths. `Where the window is very wide two or more casings may be assembled in end-to-end relation with end sections therebetween as shown in Fig. 3.

In the front and rear sides of the casing are openings l0 which are on the same horizontal line and in alinement. The rim of the openings is counter-sunk as shown, this being for the purpose of ornamentation.

ln order that the air may not pass straight through the casing from the front to the rear openings, the casing contains a bail-le plate ll extending throughout its entire length and having openings l2 which are on the same horizontal line as the open ings l0, but are arranged alternately thereto. The plate is arranged diagonally in the casing, it slanting downward from the upper rear corner to the lower front corner of the casing. By thus arranging the plate in theA casing it is held in place without any fas toning means and is therefore readily removed. The plate deflects the air sidewise as it passes through the casing and thus pre vents a draft.

The top and bottom of the casing are con* nected to the front. and rear sides by marginal folds locking upon each other as shown in Fig. 2. These folds are long enough to produce a channel in the top and bottom of the casing for guiding the telescoping end sections 9, the latter having guide ribs at the top and bottom slidably fitting in said channels. These guide ribs are formed by marginal locking folds connecting the sides and top and bottom of said sections, said sides being continued across the top and bottom of the casing to the guide channels thereof and being connected within said channels by marginal folds to a short strip, said folds and strip being located in the guide channels. This construction makes an easy sliding lit and prevents the end sections froin sticking.

The device is placed between the sill and the bottom of the partly raised lower sash, and another device may be placed. between the head of the window frame and the top of the partly lowered upper sash. rlhe device can be readily lengthened or shortened, according to the width of the window, by means of the telescoping end sections.

l claim:

A window ventilator con'lprising a casing.l and a telescoping end section carried by the casing, the top and bottom of the casing being connected to the front and rear sides by marginal folds locking upon each other and producing channels in the top and bot- I tom of the casing, and the end section having guide ribs seating in said channels.

In testimony whereof I my signature in presence of two witnesses.

NATHAN FRIEDMAN. l/Vitnesses S. J. LEHRER, H. G. BAToHELon.

@oplos of this patent may be obtained 'for ve cents each, by addressing the Commissioner of Patenti,

Washington, D. C. 

